Kilotest: Diagnoses of ID not unique violation by HTML element 414 on Opportunity Green page

Basics

About the page

• URL: https://www.opportunitygreen.org/
• Tested 3 days ago on 2026-10-07 at 22:06 by job 261007T2138-sqp
• Summary of results:
  • Rule engines:
    • Called: 12
    • Were able to test: 10
    • Reported any rule violations: 10
  • Violations: 767
  • Violators: 303
  • Issues: 72
• Download the full technical report (JSON)

About the issue

• Why it matters: User may be pointed to the wrong item
• Priority: highest
• Related WCAG standard: 4.1
• Reported by 3 rule engines (ASLint + Html Checker + HTML CodeSniffer)
• Violations: 23
• Violators: 13

About the violator

• Tag name: DIV
• Text: Donate
• Start tag: <div class="mega-toggle-block mega-html-block mega-toggle-block-2" id="mega-toggle-block-2">
• XPath: /html/body/div[2]/header[1]/div[1]/div[1]/div[3]/div[1]/div[1]/div[3]/div[1]
• Bounding box: [not obtained]
• Reported by ASLint + Html Checker + HTML CodeSniffer

Diagnoses

Here is how rule engines diagnose the ID not unique issue for HTML element 414 of the Opportunity Green page.

1. Attribute <code>id="mega-menu-item-3197"</code> should be unique. It has been defined 3 times.

   Rule engine: ASLint (eSSENTIAL Accessibility)

   Rule: duplicated_id_attribute

2. Duplicate id attribute value "mega-toggle-block-2" found on the web page.

   Rule engine: HTML CodeSniffer (Squiz Labs)

   Rule: E-WCAG2AAA.Principle4.Guideline4_1.4_1_1.F77

3. Duplicate ID mega-toggle-block-2.

   Rule engine: Html Checker (World Wide Web Consortium)